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Finding the Fourth Proportional to 490,355.73, 676,654.02 and 275,453.82

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Solution

The fourth proportional to 490,355.73, 676,654.02 and 275,453.82 is: 380,105.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,355.73 : 676,654.02 = 275,453.82 : x
  2. Step 2: Convert to fraction form
    490,355.73/676,654.02 = 275,453.82/x
  3. Step 3: Cross multiply
    490,355.73x = 676,654.02 × 275,453.82
  4. Step 4: Simplify right side
    490,355.73x = 186,386,934,627.36
  5. Step 5: Solve for x
    x = 186,386,934,627.36/490,355.73
  6. Step 6: Final answer
    x = 380,105.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.